Spoiler
Aleister Crowley in 1912
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Thelema (/θəˈliːmə/) is a Western esoteric and occult social or spiritual philosophy, as well as a new religious movement that was founded in the early 1900s by Aleister Crowley (1875–1947), an English writer, mystic, occultist, and ceremonial magician.
He's the dork lead singer in a ridiculous math rock metal band with a hit on Youtube called "Ride My White Horse".